FR1551349A - - Google Patents

Info

Publication number: FR1551349A
Authority: FR; France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1967-01-16

Filing date

1967-12-19

Publication date

1968-12-27

1967-12-19 Application filed filed Critical

1968-12-27 Application granted granted Critical

1968-12-27 Publication of FR1551349A publication Critical patent/FR1551349A/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection

FR1551349D 1967-01-16 1967-12-19 Expired FR1551349A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US60943767A	1967-01-16	1967-01-16

Publications (1)

Publication Number	Publication Date
FR1551349A true FR1551349A (fr)	1968-12-27

Family

ID=24440798

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1551349D Expired FR1551349A (fr)	1967-01-16	1967-12-19

Country Status (4)

Country	Link
US (1)	US3473164A (fr)
DE (1)	DE1574507A1 (fr)
FR (1)	FR1551349A (fr)
GB (1)	GB1194121A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4839876A (en) *	1987-11-23	1989-06-13	International Business Machines Corporation	Track seeking using a track following loop
US5090002A (en) *	1989-03-07	1992-02-18	International Business Machines Corporation	Positioning systems employing velocity and position control loops with position control loop having an extended range
US5360968A (en) *	1992-01-17	1994-11-01	Eastman Kodak Company	"Consensus sync" data-sampling systems and methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2523156A (en) *	1947-06-12	1950-09-19	Rca Corp	Vertical sweep voltage correction for film movement in flying spot scansion
US2843841A (en) *	1954-09-20	1958-07-15	Internat Telemeter Corp	Information storage system
US2894248A (en) *	1957-05-06	1959-07-07	Burroughs Corp	Border follower system
US3188907A (en) *	1962-11-27	1965-06-15	Ibm	Opto-electrical scanning system for gray level detection
US3195113A (en) *	1963-10-24	1965-07-13	Itt	High density data storage system

1967
- 1967-01-16 US US609437A patent/US3473164A/en not_active Expired - Lifetime
- 1967-12-19 FR FR1551349D patent/FR1551349A/fr not_active Expired
1968
- 1968-01-12 GB GB0864/68A patent/GB1194121A/en not_active Expired
- 1968-01-13 DE DE19681574507 patent/DE1574507A1/de active Pending

Also Published As

Publication number	Publication date
GB1194121A (en)	1970-06-10
US3473164A (en)	1969-10-14
DE1574507A1 (de)	1971-06-16

Publication	Publication Date	Title
AU425114B2 (fr)	1972-06-14
AU416737B2 (fr)	1971-09-03
AU2277767A (fr)	1968-12-12
AU342066A (fr)	1968-09-19
AU3151267A (fr)	1968-01-08
AU2977667A (fr)	1969-05-22
AU610966A (fr)	1968-11-28
AU2116667A (fr)	1969-04-03
AU2256867A (fr)	1968-12-05
AU2528767A (fr)	1970-01-08
AU3189468A (fr)	1969-07-10
BE162295A (fr)
BE614676A (fr)
BE709574A (fr)	1968-07-18
AU25066A (fr)	1968-07-11
AU34866A (fr)	1968-07-04
AU408412B2 (fr)	1970-11-23
AU2406369A (fr)	1969-01-09
AU1868267A (fr)	1968-09-12
AU459699A (fr)	1975-04-10
AU1763766A (fr)	1968-08-15
AU1677166A (fr)	1968-07-25
AU97666A (fr)	1968-08-01
BE709756A (fr)	1968-05-30
BE426053A (fr)

Legal Events

Date	Code	Title	Description
1981-10-30	ST	Notification of lapse